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3BHE030579R0003 UNITROL 1020 Other names:
Excitation controller 3BHE030579R0003 UNITROL 1020
3BHE030579R0003 UNITROL 1020 Excitation System Processor
Excitation voltage regulator 3BHE030579R0003 UNITROL 1020
3BHE030579R0003 UNITROL 1020 Indirect Excitation System
3BHE030579R0003 UNITROL 1020 is a voltage regulator of the UNITOL 1000 series, suitable for small and medium-sized synchronous generators and industrial machinery. 3BHE030579R0003 UNITROL 1020 combines performance control and power circuits with simple mechanical design
3BHE030579R0003 UNITROL 1020 is a powerful and compact automatic voltage regulator with built-in dual channel support, advanced load sharing between parallel running machines, rotating diode monitoring, automatic synchronization, and multiple integrated communication options.
3BHE030579R0003 UNITROL 1020 is a voltage regulator of the UNITOL 1000 series, suitable for small and medium-sized synchronous generators and industrial machines. This voltage regulator adopts the most advanced microprocessor technology and IGBT semiconductor manufacturing, allowing current output up to 20 ADC for continuous operation. 3BHE030579R0003 UNITROL 1020 has high performance under various temperature and vibration conditions, and has been fully certified according to DNV and UL standards. Compared to the old version, 3BHE030579R0003 UNITROL 1020 has more features such as Ethernet, USB, data and event recorders, etc.
3BHE030579R0003 UNITROL 1020 Main Features Operation Mode
Using an adjustable PID controller for automatic voltage control
Power factor and reactive power controller using PID control algorithm
Excitation current regulator using PI control
Reactive power distribution of parallel and islanded generators
Automatic synchronization and pre synchronization voltage matching
Monitoring and limiter
Provide standby function and set point tracking function for redundant channel system through reliable CAN bus
Enhance system monitoring functions, such as voltage transformer monitoring
Synchronization check function
Rotating diode monitoring function (RDM)
Various limiter functions (excitation current limiter and many other functions)
Data loggers and trends
Automatic and manually triggered data loggers record measurement values and user selected data
The event recording function records successful information as well as time and date information
Use user-friendly debugging and maintenance tool CMT1000 trend recorder
Communication interfaces and tools
Realize full function MODBUS communication through standard Ethernet and RS485
Easy configuration and reading of measurement values through the powerful regulator’s LCD panel
CMT1000, a powerful and user-friendly debugging and maintenance software tool, allows for easy parameterization, monitoring, trend analysis, and optimization
All kinds of things
Power system stabilizer compliant with IEEE PSS 2A/2B
Powerful dual processor technology can maintain control over regulation even in the event of interference on the Ethernet communication side
UNITOL ® 1000 series UNITOL ® The 1000 series is ABB’s brushless excitation system, suitable for applications using synchronous machines ranging from 100kVA to 80MVA.
UNITROL ® The 1000 series has been deployed in over 20000 devices worldwide, suitable for power plants, ship electric propulsion and auxiliary power sources, diesel electric locomotives, port cranes, and mining trucks.
UNITOL ® The excitation system is a critical component of many generator sets, used by power plant owners and operators to achieve reliability, stability, and fast transient response of equipment operation according to grid requirements.
The ABB excitation system, combined with automation and electrical systems, rotating machinery control, instrumentation, and advanced digital services, forms a complete and reliable system that can serve all power generation facilities. Certified by TUV – the world’s first excitation system that complies with German grid specifications VDE-AR-N 4110 and VDE-AR-N 4120.
UNITOL ® one thousand and twenty
UNITROL 1020 is a voltage regulator designed specifically for small and medium-sized synchronous generators and industrial machinery. It combines performance control and power circuits with simple mechanical design, providing high performance under various temperature and vibration conditions. This one
The Automatic Voltage Regulator (AVR) features built-in dual channel support, advanced load sharing between parallel running machines, rotating diode monitoring, automatic synchronization, and multiple integrated communication options. It adopts the most advanced microprocessor technology and IGBT semiconductor manufacturing, allowing current output of up to 20 ADC for continuous operation.
UNITOL ® one thousand and ten
UNITOL ® 1010 is an indirect excitation system suitable for small and medium-sized synchronous generators and industrial machines. Its advanced microprocessor technology and IGBT semiconductor allow for current output up to 10 ADC for continuous operation.
With built-in dual channel support, advanced load sharing between parallel running machines, rotating diode monitoring, automatic synchronization, and multiple integrated communication options, the UNITOL 1010 can provide high performance under various temperature and vibration conditions.
UNITOL ® one thousand and five
UNITROL 1005 is the smaller component in this series, designed specifically for low-end excitation applications, with a maximum excitation current of up to 5 ADC.
Like all UNITOLO1000 products, UNITOLO 1005 is based on the same target software source code and shares the same simulation model, making it highly suitable for demanding grid code applications.
This kit includes CMT1000, a tool for centralized and rapid debugging.
UNITOL ® The 1000 FLEX system is a pre packaged solution for applications that require single or dual channel controllers. All systems are equipped with UNITOL ® 1020 FULL, as a standard device, fully utilizes the best solution to achieve optimal pricing and flexible project adjustment constraints.
With the rapid transition to standard applications, this solution brings together all the functions required for the excitation system. Pre packaged solutions allow you to design excitation systems in the most flexible and cost oriented way possible.
All products on this website are special products, and market prices have been fluctuating,
Please refer to the customer service quotation for details, as the product is new and the price is not genuine,
Please confirm the model, product, price, and other detailed information with customer service before placing an order. The website has been used,
The new one is for sale, please contact customer service for further communication.
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II. Basic Positioning and Applicable Units
Belongs to the ABB UNITROL 1000 compact excitation series, featuring an integrated IGBT power output AVR, compatible with 0.5~50MW synchronous generators/synchronous motors:
Onshore: Diesel/Gas/Steam turbine/Hydropower plants, distributed photovoltaic power generation systems
Special Applications: Marine power plants, diesel locomotive synchronous generator sets, direct-drive permanent magnet synchronous wind turbines, high-power synchronous compressor motors
Grid-connected/islanded dual operating modes, supporting single-unit and multi-unit parallel reactive power sharing
III. Core Electrical Rated Parameters
1) Excitation Power Output (Integrated Power Circuit)
55℃ Long-term Continuous Excitation Current: 20A DC
70℃ Long-term Continuous Excitation Current: 10A DC
10s Short-time Overload Peak: 38~40A DC
Excitation Circuit Withstand Voltage: Maximum 420V DC Peak Value
2) Auxiliary Control Power Supply (Wide Range AC/DC Universal)
DC Input: 12.5~48V DC
AC Single-phase/Three-phase: 9~300V AC, Frequency 40~600Hz
Maximum Power Consumption: 40W
3) Voltage Regulation Performance
Steady-state Voltage Regulation Accuracy: ±0.5% (Meets IEEE 421.5 and IEC Excitation Standards)
Closed-loop Response Time <10ms, Built-in PSS Power System Stabilizer Suppresses Low-Frequency Oscillations
Power-end PT Sampling: 0~500V AC Single-phase/Three-phase Compatible
4) Environment and Installation
Operating Temperature: -25℃ ~ +70℃
Protection Rating: IP20 (Rack Panel/DIN Rail Mounting)
EMC Industrial Anti-interference, SIL2 Safety Level Certification
IV. Operation Control Mode
AVR Automatic Voltage Regulation Mode (Main Operation): Dual closed-loop voltage + excitation current PID stabilizes generator terminal voltage
FCR Manual Excitation Mode: Constant excitation current output for maintenance and start-up commissioning
Constant Reactive Power / Constant Power Factor Control: Reactive power dispatch for grid-connected units
Automatic Synchronization Pre-voltage Adjustment, Reactive Power Sharing for Multiple Units in Parallel Operation
Built-in PSS1A/PSS2A Power System Stability Algorithm
V. Complete Set of Built-in Limits and Fault Protection
Full Coverage of Generator Excitation Faults, Configurable Alarm/Trip Output:
OEL Overexcitation Limit, UEL Underexcitation Limit, V/Hz Limit (Anti-Core Saturation)
PT Voltage Disconnection, CT Disconnection, Excitation Overcurrent, Rotor Short Circuit, Loss of Excitation Protection
Rotor Rotating Diode Fault Monitoring (RDM), Generator Terminal Overvoltage/Undervoltage, Overheat Protection
Soft Excitation, Controllable Demagnetization Logic, I²T Inverse-time current limiting
VI. Hardware Interface Configuration
1) Local Human-Machine Interface Operation
Front-mounted LCD panel + physical buttons, real-time display of voltage, excitation current, reactive power, and fault codes, eliminating the need for local parameter setting via computer.
2) Multiple Communication Interfaces
USB: Direct connection to PC-specific debugging software CMT1000 for parameter download, fault recording, and firmware upgrade.
Ethernet: Modbus TCP, IEC 61850, for DCS/remote monitoring.
RS485: Modbus RTU bus for interfacing with traditional power plant PLCs.
CAN Bus: Redundant master-slave switching communication between multiple UNITROL 1000 series units.
3) Programmable I/O Terminals (Spring-plugged terminals)
Digital DI: 8 channels of 24V switch inputs (excitation, shutdown, external mode switching).
Digital DO/Relay Outputs: 4 channels of alarm, trip, and operating status feedback.
Analog AI/AO: 3 channels of ±10V/4~20mA setpoint and reactive power feedback signals.
VII. Debugging Software CMT1000 Functions
Batch configuration of unit excitation parameters, and retrieval of standard grid templates
Real-time waveform monitoring, and transient waveform recording and storage during disturbance tests
Fault event logging, and export and analysis of historical alarms
Controller firmware version upgrade, and hardware channel self-test diagnostics
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